Data breach message after 14.6 update

I imagine this is in relation to the suggestions section of apples keychain / the password manager of your IPhone

It searches your passwords against a database of data breaches, dumps and leaks (in a secure way) then notifies you if any of your passwords have been apart of one by providing you with that text that you posted.

Essentially what it is saying is that someone has managed to exploit a website or services server / you have entered your password and username into a phishing site (usually the former) and they have then published your password and username/email online in a 'dump'. Basically a list of stolen usernames and passwords.

The next steps that you should take are going through that list and changing the password for each website / service through their website. I believe apple even links you directly to a page for each one to speed up the process.

Just to clarify, these data breaches have nothing to do with apple or their software / website. All your passwords have likely been stolen from 3rd party services

Where did you get this message from that said 430 passwords have been leaked? Can you post a screenshot?

If you are reusing one password, or a variation of sorts, and you had a site that had a breach Apple will warn you about this but it didn't start with iOS 14.6.

Can you post a screenshot?

There is no password breach in 14.6. It is telling you if you are using passwords that have been obtained from a breach. A recent dark web discovery found billions of passwords on the dark web. If yours was among those you will be alerted to the fact.

What’s up with this password breach thing that’s going on this is really screwing up my apps

There is no context to you screen shot. Can you post the whole screen shot? Black out any personal information prior to posting.